881 – Coronation of Charles the Fat
Charles the Fat was the son of Louis the German. He is part of the Carolingian dynasty. He and his brothers succeed their father to rule a part of the East Frankish kingdom each. When his brother Carloman falls ill and dies, Charles travels to Rome. There, he inherits the kingdom of Italy, but Pope John VII also crowns him as the next Holy Roman Emperor.
Upon the death of his other brother Ludwig not much later, he also inherits all the German territories, making him sole rules of East Francia.